package com.itheima.provider.controller;

import com.itheima.provider.domain.Goods;
import com.itheima.provider.service.GoodsService;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Date;

/**
 * Goods Controller 服务提供方
 */

@RestController
@RequestMapping("/goods")
public class GoodsController {

    @Autowired
    private GoodsService goodsService;

    @Value("${server.port}")
    private int port;

    /**
     * 出现降级的情况:
     *      1.出现异常
     *      2.链接超时: 默认是1秒钟
     */
    @GetMapping("/findOne/{id}")
    /**
     * fallbackMethod = "findOne_fallback" :指定降级后需要调用的方法
     *
     */
    @HystrixCommand(fallbackMethod = "findOne_fallback",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000"),
            //监控时间 默认5000 毫秒
            @HystrixProperty(name="circuitBreaker.sleepWindowInMilliseconds",value = "5000"),
            //失败次数。默认20次
            @HystrixProperty(name="circuitBreaker.requestVolumeThreshold",value = "20"),
            //失败率 默认50%
            @HystrixProperty(name="circuitBreaker.errorThresholdPercentage",value = "50")

    })
    public Goods findOne(@PathVariable("id") int id) {

        Goods goods = goodsService.findOne(id);

        //出现异常
        //int i = 3 / 0 ;

        /*
        /出现链接超时的情况
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        */


        //测试熔断机制
        if (id == 1){
            //出现异常
            int i = 3 / 0 ;
        }

        goods.setTitle(goods.getTitle() + ":" + port);//将端口号，设置到了 商品标题上
        return goods;
    }

    public Goods findOne_fallback(int id) {
        Goods goods = new Goods();
        goods.setTitle("我被降级了...");

        return goods;
    }
}